<?php

namespace app\admin\controller;

use think\Controller;
use think\Request;

class Qr extends Controller
{
    function createQRcode($savePath, $qrData = 'PHP QR Code :)', $qrLevel = 'L', $qrSize = 4, $savePrefix = 'qrcode')
    {
        if (!isset($savePath)) return '';
        //设置生成png图片的路径
        $PNG_TEMP_DIR = $savePath;
        //检测并创建生成文件夹
        if (!file_exists($PNG_TEMP_DIR)) {
            mkdir($PNG_TEMP_DIR);
        }
        $filename = $PNG_TEMP_DIR . 'test.png';
        $errorCorrectionLevel = 'L';
        if (isset($qrLevel) && in_array($qrLevel, ['L', 'M', 'Q', 'H'])) {
            $errorCorrectionLevel = $qrLevel;
        }
        $matrixPointSize = 4;
        if (isset($qrSize)) {
            $matrixPointSize = min(max((int)$qrSize, 1), 10);
        }
        if (isset($qrData)) {
            if (trim($qrData) == '') {
                die('data cannot be empty!');
            }
            //生成文件名 文件路径+图片名字前缀+md5(名称)+.png
            $filename = $PNG_TEMP_DIR . $savePrefix . md5($qrData . '|' . $errorCorrectionLevel . '|' . $matrixPointSize) . '.png';
            //开始生成
            \PHPQRCode\QRcode::png($qrData, $filename, $errorCorrectionLevel, $matrixPointSize, 2);
        } else {
            //默认生成
            \PHPQRCode\QRcode::png('PHP QR Code :)', $filename, $errorCorrectionLevel, $matrixPointSize, 2);
        }
        if (file_exists($PNG_TEMP_DIR . basename($filename)))
            return basename($filename);
        else
            return FALSE;
    }
    public function create($id){
        $savePath = APP_PATH . '/../Public/qrcode/';
        $webPath = '/public//qrcode/';
        $qrData = 'admin/Member/Eduser?id='.$id;
        $qrLevel =  'H';
        $qrSize = '8';
        $savePrefix = 'NickBai';
        if($filename =$this->createQRcode($savePath, $qrData, $qrLevel, $qrSize, $savePrefix)){
            $pic =''.$webPath . $filename;
        }
        return $pic;
    }

}
